get_pathway_details

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the burden. It implicitly signals a read-only lookup ('Fetch') and discloses the returned fields, but says nothing about missing-ID behavior, error handling, or any access constraints. Adequate for a simple single-argument read, but thin on behavioral traits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The purpose sentence is front-loaded and the Args/Returns block is compact and scannable. The Returns section is somewhat redundant given an output schema exists, but it costs little and adds no noise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a one-parameter read tool with an output schema present, the definition covers purpose, argument format via example, and output shape. The only meaningful gap is the absence of routing guidance relative to get_pathways, which is a minor omission at this complexity.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% and the single st_id property carries no description, so the description must compensate. It does: it names the parameter, defines it as a Reactome pathway stable ID, and supplies a concrete example ('R-HSA-5357801'), which is enough to format the argument correctly.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: fetch detailed info for a Reactome pathway, scoped to lookup 'by its stable identifier'. That scoping implicitly separates it from the sibling get_pathways, but the alternative is never named, so the differentiation is inferred rather than stated.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is only implied: the tool takes a stable ID, so an agent can infer it is for retrieving details on an already-known pathway rather than discovering one. No explicit when-to-use, when-not-to-use, or pointer to get_pathways for lookup-by-name is given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.